Combined hydraulic ram and pump



(No Model.) 2 Sheet-s-Sheet 1.

G YEL LOTT. COMBINED HYDRAULIC RAM AND PUMP. No 534,938. v Patented Feb. 26, 1895.

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G. YELLOTT. COMBINED HYDRAULIC RAM AND PUMP.

No. 534,938. Patented Feb. 26', 1895.

WITNEEEEE' "\IVENT URL- K iii/Tim GEORGE YELLOTT, OF TOWSON, MARYLAND.

COMBINED HYDRAULIC RAM AND PUMP.

SPECIFICATION forming part of Letters Patent No. 534,938, dated February 26,1895.

Application filed September 13 1894. Serial No. 522,941. (No model.)

To all whom it may concern.-

Be it known that I, GEORGE YELLOTI, of Towson, in the county of Baltimore and State of Maryland, have invented certain Improvements in a Combined Hydraulic Ram and Fump, of which the following is a specificaion.

In my present invention the water which in other hydraulic rams, after passing through the ram chamber runs to waste, is collected in a water-tight tank or cistern placed under the ram and a greater or less quantity of it, in proportion to the vertical height to which it is to be elevated, is raised by the piston of the pump which is lifted by the momentum of the whole column of water in the drive pipe Whenever there is a recoil caused by the sudden arrest of the flow produced by the ascent of a plunger closing the outlet of escape.

The following is a full and complete description and specification of my invention, reference being made to the accompanying drawings, forming a part hereof, and in which Figure 1 is a longitudinal section of the improved combined ram and pump and Fig. 2 a plan of the same. Fig. 3 is asection of a part of the invention taken on the dotted line a:--m-.

Referring to Figs. 1 and 2, A is the ram chamber and B represents the drive pipe.

0, represents a cylinder on the top of the drive pipe of practically the same interior diameter as the drive pipe, and opening into it.

D, is a piston fitted accurately in the cylinder 0.

E, is a pump cylinder below the drive pipe,

' in alignment with the cylinder 0, and H a piston fitted in said pump cylinder and connected with the piston D by the piston rod 1. This pump is submerged in atank or cistern which receives and retains the Water discharged from the ram and which tank is represented by K. This pump is connected by a pipe L with an air chamber represented by M.

N is the delivery pipe, and O, the pipe which receives the Water from the tank or cistern K and admits it into the pump cylinder E.

P, is the plunger chamber formed at the end of the ram chamber opposite to the drive pipe. It leads into a waste water chamber G which is open at the top to allow the water to escape freely.

Q is a cylindrical guide closed at the top and firmly fastened to, or cast with the bottom of the plunger chamber, so that it is immovable.

R is a plunger of cylindrical shape open at the top and sliding up and down on the cylindrical guide Q, and its outer diameter is such that in its upward movement it closes the plunger chamber P leading from the ram chamber into the waste Water chamber.

S is the plungerstem, and T a disk secured to "said stem. The stem is also secured to the plunger in such a Way as not to close the opening in the top of the plunger, for if this opening were closed the water when it strikes the disk would react and prevent the plunger from rising. The disk T slides upward and downward in the Waste water chamber and is fitted accurately therein with no open space forming an annular ring between its rim and the interior diameter of said Waste water chamber, but there are perforations or open spaces a in said disk through which the water flows and thus imparts velocity to the water in the drive pipe. Over this disk is another disk U of equal diameter with corresponding perforations b or open spaces and so arranged as to be partially revolved, and by this device the flow of the water from the ram can at any time be stopped or the quantity diminished. The top view of these disks is shown in Fig. 3.

The operation of this combined ram and pump is as follows: Supposing the tank K to be filled with water and the plunger to be down in its lowest position, the water is allowed to escape by opening the perforations or open spaces in the disks T and U in the mode already indicated. The velocity of the water causes the disks to ascend and the plunger R to be raised. As soon as the upper end of the plunger enters the cylinder P the flow is instantly arrested and the momentum of the whole column of Water in the drive pipe is directed and concentrated on the piston D in the cylinder 0, and the pump piston H being thereby elevated forces water from the tank K into the air chamber M. When the plunger falls by its own weight the flow of water is again established and the pistons D and H fall, and the pump is again filled with water. There is not the slightest jar or shock in the operation of this ram as the pressure on the cylindrical plunger is equal on every side and the plungers and pistons alternately rise and fall with uniform regularity. Rams of any size can therefore be constructed. The quantity of water raised is, of course, depen dent on the vertical height to which it is elevated, but all the Water raised has first passed through the ram.

I claim as my invention In combination with a ram chamber, a drive pipe leading to the same, a tank which surrounds the ram chamber, a stationary cylindrical guide in the ram chamber, an open top plunger adapted to slide on the said guide,a cylinder situated over the open top plunger adapted to receive the latter, an open waste Water chamber,a stem leading from the open top plunger, into the waste water chamber carrying a disk having variable openings, a cylinder leading from the drive pipe having a piston and rod, another cylinder in alignment with the first provided with a piston on the said rod, and a pipe to supply the pump cylinder with Water from the tank, substantially as specified.

GEO. YELLOTT.

Witnesses:

WM. T. HOWARD, EDGAR F. J OBSON. 

